S4
Early information. Xteink has only published a short summary on its Chinese site so far, and the S4 is on sale in China only. The sharpness, charging port and audio come from launch coverage and may change when a full spec sheet appears.
The Xteink S4 is a 4.3-inch Android 11 pocket eReader with a touchscreen, page-turn buttons and a warm front light, so Kindle, Kobo and other reading apps can be installed.
- Screen
- 4.3″
- PPI
- 220
- Colour
- No
- Storage
- 32 GB
- Weight
- 95 g
Specifications
Report a wrong or missing specScreen
- Screen size
- 4.3″
- Sharpness
- 220 pixels per inch
- Colour
- No
- Front light
- Yes, adjustable warmth
- Display detail
- 4.3-inch E Ink multi-touch panel; 220 ppi (Good e-Reader; Xteink hasn't published the resolution or ppi)
- Front light
- Front light with adjustable warm/cool colour temperature
Reading and writing
- Stylus
- No
- Page-turn buttons
- Yes
- Audiobooks
- Yes
- Storage
- 32 GB
- Software
- Android
- Formats
- More than 10 formats natively (Xteink hasn't listed them), plus whatever installed reading apps open
- Book store
- None built in; Android 11 with mainstream reading apps allowed, such as Kindle, Kobo and KOReader (Xteink doesn't say whether Google Play is included)
Design
- Weight
- 95 g
- Materials
- Magnetic back for phones
- Size
- 6.98 mm thick, about 95 g; Xteink hasn't given the height and width
Connections and battery
- Battery life detail
- 1400 mAh
- Charging
- USB-C (Good e-Reader, The eBook Reader)
- Connectivity
- Wi-Fi, Bluetooth, USB-C; 2 GB RAM; 32 GB built-in storage, no microSD slot
- Audio
- Bluetooth audio for listening (Good e-Reader); Xteink doesn't say whether there's a speaker
Pros and cons
Pros
- Android 11, so reading apps from different book stores can be installed
- Touchscreen, page-turn buttons and a front light with adjustable warmth
- 1,400 mAh battery, the largest in Xteink's range
Cons
- No microSD slot; 32 GB built in
- Heavier and thicker than Xteink's other readers, at about 95 g and 6.98 mm
- On sale in China only so far
Closest rivals
Model | Screen | PPI | Colour | Storage | Weight | Released |
|---|---|---|---|---|---|---|
| 4.3″ | 219 | No | 16 GB | 68 g | Sept 2026 | |
| 4.3″ | 219 | No | 16 GB | 72 g | Jul 2026 | |
| 4.3″ | 220 | No | 32 GB | 74 g | Dec 2025 |
Sources
- xteink.cn
- xteink.cn/app/model-viewer-360
- goodereader.com/blog/electronic-readers/xteink-s4-is-available-now-with-usb-c-a…
- blog.the-ebook-reader.com/2026/09/15/xteink-s4-released-with-android-frontlight…
- androidauthority.com/xteink-s4-e-reader-3712546